# What is the ratio for mixing gas and oil for a chainsaw?

Most modern chainsaws, string trimmers, leaf blowers and other small-engine two-stroke equipment recommend a 50:1 oil mix ratio, but some recommend 40:1 and older two-stroke equipment might even call for 32:1.

## Can you mix motor oil with gas for chainsaw?

Most STIHL gasoline-powered equipment runs on a 50:1 mixture of gasoline and 2-cycle engine oil.

## How do you mix 50 to 1 chainsaw fuel?

Mixing ratios

For a mixing ratio of 1 : 50 you need 5 litres of high-octane gas and 0.10 litres (100 ml) of STIHL two-stroke oil.

## What happens if you put too much oil in 2 stroke?

What happens if the mixing ratios in a 2 stroke engine are incorrect? If you put too much oil, it can generate additional carbon build-up, making it difficult to start the engine, blow excessive smoke which is particularly bad for the environment and may (with time) cause the engine to stop operating correctly.

## How much gas and oil do I mix for a 2 stroke?

2-Stroke Oil Mix Calculator

For a 50:1 ratio of gas to oil, use 2.6 fluid ounces of oil per gallon of gas. For a 40:1 mixture, use 3.2 fluid ounces of oil per gallon of gas. For a 32:1 mixture, use 4 fluid ounces of oil per gallon of gas.

## What is 50 to 1 fuel mix in Litres?

Mixing ratios

For a mixing ratio of 1 : 50 you need 5 litres of petrol and 0.10 litres (100cm³) of STIHL two-stroke oil.

## How much oil do I add to 2 Litres of petrol?

This equals 25mls of two stroke oil to 1 litre of petrol. It is pretty easy to calculate, you just multiply the litre amount by 25.

40:1 Fuel mix chart Litres.

Fuel – Litres (L)Oil – Millitres (mls)
125
250
375
4100

## How much 2 stroke do I put in a Litre of petrol?

If you are using a different brand of two-stroke oil, the standard ratio mix is usually 25:1 (40ml of oil per 1 litre of fuel).

## Can I use 2 stroke oil for chainsaw bar oil?

Can You Use 2 Cycle Oil As Bar Oil? You should only use two-cycle oil as the mix, never as a chainsaw bar oil alternative. Using two-cycle oil on the bar will not provide enough tackiness to stick to the chainsaw chain in the summer months. Two-cycle oil also will not work in the winter.

## Does the first number in oil matter?

The first number describes viscosity at low temperatures. The second number refers to viscosity at normal engine operating temperatures. Some examples: the “5” in a 5W-30 motor oil will protect an engine down to an air temperature of about -25 degrees Fahrenheit.

## What is the best 2 stroke mix ratio?

Use a 40:1 two-cycle oil mix ratio. One gallon of gasoline combined with 3.2 oz of two-cycle engine oil. Unsure of the age of your equipment? Use the 40:1 mixture.

## How do you find the mixing ratio?

Divide 1 by the total number of parts (water + solution). For example, if your mix ratio is 8:1 or 8 parts water to 1 part solution, there are (8 + 1) or 9 parts. The mixing percentage is 11.1% (1 divided by 9).

## How much 2 stroke oil per gallon of gas?

50:1 Ratio
Gasoline1 Gallon2 Gallons
2-Cycle Oil2.6 US Oz.5.1 US Oz.

## How do you mix 100 to 1 ratio?

100:1 – Mix 50ml of oil per 5ltrs of fuel.

Recommended by Yamaha and Suzuki for most of their small two stroke engines up to about 30hp, this ratio requires the least amount of TCW3 two stroke oil. The result of using this ratio (less oil) is reduced spark plug fouling and less smoke.